Updated the login path used in the sign_in method. Fixed some spacing.
Updated the header to be <h1> instead of <h2>.
Updated the title for the new-user page.
Fixed spacing
Added user login tests.
Changed schema for questions.
Updated the error message to be displayed in a div.
Added a title to the file
Added another test helper to test alert divs
Moved these tests to the problems_pages_spec.rb file.
Added tests to test problem creation.